Truss bridge



3 sheets-sheet 1. D. F. LANE. Y TRUSS BRIDGE.

(N10 Model.)

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3 Sheets-,-Sheet 2.A D. P LANB. TRUSS BRIDGE.

(No Mew.)

Patented Deo. 1 8 194.

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TME' Noam vrrsns co.. Puma-ums., wAsums-rou. n. cA

(No Model.) ,3 sheets-sheet a.

D.F. LA1NB.

' 'muss BRIDGE. i V- No. 531,048. Patented Deo. '18, 1894.

TH: imnms Papas co.. Prgomumov. WASHINGTON. D. c.

NrEEnfv STATES PATENT 'OrricE.

DANIEL E. LANE, or ooENiNet-NEW YORK.

TRUSSBRIDGE.

`SPECEEEICATLON forming part of Letters Patent No. 531,048, dated December 18, 1 894.. k.ilepneeeien filed Apen s, 1892. Renewed Apri17. 1894. seein Ne. 506,775. (Ne Bieden' To ctlwhom, it. may concern:

-Beit known, that I, DANIEL F. LANE, a citizen of the United States, residing at Corning,i

' in the county of Steuben andAState of`New York, have invented certain new and useful Improvements in Truss-Bridges, of which the]l following is a specification.

I have improved the construction of the' truss-bridge for which Letters Patent No.l

424,318 were granted to me March 25, 1890, and my present improvements are directed to provisions whereby the connections of the door-beams and the top truss-beams are rendered stronger yand more durable; the floor truss-rods rendered more eective; the abut-' ments for the ends of the bridge rendered du-v rable and iirm; andthe bridge rendered stiff and firm. In these particulars my invention consists of certain parts and combinations of` cordingto myinvention. Fig. 2k shows asidevr view of the iron abutment for the bridge.

e Fig. 3 is a top view of the'bridge shown in Fig. 1. Fig. 4 shows in vertical sectional elevation the lapped end of the abutment capbeam and the ends of the truss beams secured thereon and together, one-half of the clamp ing chair being removed, and Fig. 5 is an end s View of the same. Fig shows in side view a coupling binder for connecting the upper truss beam with its central arched brace. Fig. 7 is a vertical cross section on the line :r of

Fig. 6, and Fig. S shows one of the coupling Fig. 9 is a top view of the iron abutment. e Fig. 10 is a horizontal section of binder parts.

one end of the abutment on the line y of Fig. 4, showing the, manner of securing the cap beam to the ,abutment piles. Fig.,11 shows one of the kdivided chair parts for the chord beams. Fig. 12 is a shoe block forr connecting the girder beam and itstruss rod. Fig. 13 is a vertical cross section on the line w of Fig. 14, which is a vertical sectional elevation showing the lower truss beam, the girderbeam, its shoeblock truss-rod connection, and vthe top truss-beam clip connections with the girder-beam. Fig. 15 shows the brace rod connection with the top truss-beam, and Fig. 1,6 shows a construction in which the floor girders are extended beyond the truss beams to form side walks at each sideof the bridge.

`their flanges 6 stand toward the water, as

seen in Figs. 9 and 10, and they are sufficiently close together tolform a firm support on which the bridge rests with its flooring on a level with the roadway. A cap-beam 7 preferably of angle or L-shaped iron is placed upon the tops of the piles so that its vertical side abuts against the flange 6 of the piles,

Aand is secured and bound thereto by clips 8,

see Fig.. 4, passed around the piles and throughholes in the vertical side of the capbeani 7and fastened by nuts 9. The ends of this cap beam are bent and turned inward toward the bank so as to form a lap 10, which I secure to one or two piles 11 inthe same manner as with the row of piles. On the land side I cover the row of piles with iron plates 12 seas to form a wall, and I fasten these wall plates to the rows `of piles by nutted clips 13. On the Water side I secure to the `row of piles one .or more beams 14, preferj ably of railroad iron, extending .obliquely' from the lower end ot' one pile at one end of the row to the upper end Aof* the'pile at the other end of the row, and inclining down the river and I fasten this inclined beam to the piles by nutted clips 15. This .construction providesa pile abutment of 'liron sofas to form a structure walledand braced-and a solid'sill or foundationfor the endsfof the chord-beams at each end of 'thebridge A base plate 16is (seen in Figs. 4 and 5) Yplaced across the lapped ends of the cap beam 7 and forms the seat for the end of the IOO truss-beam 1 and to which it is secured by a chair of peculiar construction which I will now describe. An iron chair the counterpart of the truss-beam, is provided so as to form a clamp, preferably of two parts 17, adapted to fit over and upon the end of the truss-beam, each part having a base iiange 18 by which it is secured to the base plate 16 by the nutted bolts 19. A nntted bolt 2O passing through the chair parts and the web of the truss beam, and a nutted bolt 20 passing through the chair parts above the latter bind the chair parts and said beam together. A nutted clip 2l passing in a groove over and upon the chair parts and through holes in the cap'beam of the abutment, serves to secure and bind the chair parts to the said abutment. Each end of each truss beam is supported and secured in an identical Way. Centrally at the middle of the length of the bridge and at equal distances therefrom I secure cross beams or girders 4 beneath the truss-beams by means of nutted clips 23, see Fig. 14, passed over the said beams and through holes in a baseplate 24 on the under side of the girder, the clips obliquely straddling the girder.

The truss beams 2 are inclined. downward at their ends and are fitted into sockets 25, see Fig. 11, formed at the inner ends of the divided chair parts 17, which chair parts thereby serve as abutments for the trussbeams. This socket is the counterpart of the truss-beam 2 and thev latter when bound therein rests in a shouldered notch c upon the head or ball of the lower truss-beam. The head or bail of the lower truss-beam is notched and upset at 26, see Fig. 4, and the chair parts have corresponding notches and projections 26, see Fig. 11,which interlock and supplement the fastenings of the chair parts for resisting the thrusting action of the trussbeams 2 upon the divided chair. At these abutting ends I fasten the truss-beams together by nutted clips 27 straddling the beams and passing through the projecting ends of a tie-rod 28 beneath the lower truss beam, as in Fig. 4. The chair socket and the clip serve to hold the end of the upper truss-beam firmly and solidly upon the lower truss-beam and prevent it from side movement as the chair embraces the truss-beams like a clamp.

Referring to Fig. 4 it will be seen that the lower truss-beam is notched and upset at c to receive the end of the upper truss-beam and form a shouldered abutment therefor and that the corners c2 of the base of the latter beam are turned down at the ends so as to lap on each side ot the ball or head of the lower trussbeam, and thus give a iirm support for each end of the upper truss-beam in connection with the abutting chair of the lower trussbeam, and the clips 27 which straddle both beams.

The upper truss-beams and the girderbeams are connected by rods 29 secured by nuts 30 to the base-plate 24, and by nuts 3l .to The angle plates 32 which are bolted to the opposite sides of the upper truss-beam; said rods being preferably crossed as shown in Figs. 1 and 14. At the middle of the span an arched truss brace 3 supports the main upper truss-beam and is clippedu at its ends to the lower trl1ss-beani,which latter is upset to form abutlncnts 33 for the brace. At the junction ot' the arch and upper truss-beam,

clip-rods 34 straddle these beams and are nutted to the girder base plate 24. I find it important however to connect the arch and upper truss-beam to give the latter a better support, and for this purpose I provide a binderof two clamping parts 35 having their clamping faces 4the counterparts of the railroad iron form of these j oining parts, as seen in Figs. 7 and 8, so that the binders will lie upon the webs ot' these parts and be bound firmly thereon by clinch bolts 36. The cliprods 34 pass over these binder parts 35 in face grooves 37 which serve to hold the rods in place.

A truss-rod 38 is placed beneath each girder and is secured to each of its ends by a shoe or socket block 39 as seen iu Figs. 1, 12 and 14, and is trussed over a downward standing post or prop 40 at the middle ot' the girder. The shoe is a solid iron block cast with sockets 41 the counterpart of the cross section of the beam and it has a bottom projection 42 by which itis bolted to the base danges ot' said beam. The truss-rod passes through holes in the shoe blocks and is secured by nuts 43 with which I use washers 44 seated in a concave bearing in the outer end of the shoe so that the latter form solid abutments for the rod and with the latter and the middle prop, form a durable and eiective support for the girder beam. One or more brace rods 45 connect and are nutted to each end of the gird er-beam and to the inclined ends of the upper truss beam, through the web of which it passes and rests upon a wear plate 46 as seen in Fig. 15. Brace rods 47 connect the girder-beams with the abutments through the truss beam plates 16, to which said rods are secured by the studs 48, as seen in Figs. 3 and 5; while one or more tie rods 49 connect the girders to each other.

Where the `clip fastenings pass over the edges of the flanges of the beams, the latter are notched to give a positive locking connection therewith.

In Fig. 16 I have shown a construction ot the girder-beams for side walks in which the said girdenbeams are extended to give the desired width of Walk, and in this connection I do not use the bottom truss-rods.

The construction which I have set out gives a strong, safe and durable iron bridge for comparatively short spans. The floor-girders and the truss-beams are bound together by ICO rod-clips; the flooring structure is firmlyl sepolta doubled orlapped ends of the abutments, give v rendered stiff and rm against longitudinalor lateral vibration; or sinking at the crown. It is obvious that the abutments can be placed to form a wall at the bank ora short distance away-from the bank; and that the piles when firmly driven, walled and braced, form a structure more durable as a support for the stone Work or piles alone.` Itis evident that immaterial departuresmay be permitted from the general construction and arrangement of parts contributing toward my invention, and for this reason I do not wish to be understood as limiting myself thereto inv precise detail, and construction.

Referring to Fig. 14 it will be seen that the girder-beams 4 and the truss-beams 2 are con nected by rods 29 nutted to plates 24 `under the girder-beam and to angle-plates 32 bolted to the opposite sides ofthe truss-beams, and

vit will be understood that these angle-plates are fitted uponthe web and base of said y truss-beamand are bolted to said web through beam, 'as seen-in Fig. 3.

arate plates at vboth ends.

derstood that the plates 24 project on each their vertical'sides, whilethe said rods are nutted to the horizontal sides of said angleplates, which, for this purpose, overhang the edges of the beam,and thereby give a strong and durable fastening for these rods to sep- It will also be unside of the girder-beams and that these rods are arranged in pairs on each side of said Having thus describeduan iron bridgeembodying, in preferred form, the several features of my present invention in combination, what I claim, and desire to secure by Letters Patent, is

i 1. In an iron bridge, the combination, of an abutment and the truss beams, the upper beam resting upon and engagingv the lower beam, with a chair formed of two matching parts engaging the lower beam, the bolts 20,

0a securing the chair parts together and to the lower beam, the nutted clip 27 engaging said beams, and the nutted clip 21 engaging the chair and the abutment, substantially as described.

2. The combination, in an iron bridge, of the truss-beams, with chairs formed of two counterparts providing sockets or seats adapted to receive and support the ends of said beams in abutting relation, land nutted bolts 2O and 2Oa passingthrough the beam and the chair parts, substantially as described.

3. The combination, in an iron bridge, ofthe truss-beams, with chairs formedof two counterparts providing sockets or seats adapted to receive and support the ends ot' said beams in abutting relation, a base plate 16, a transverse abutment beam, and means for binding and securing said parts together, substantiall y as described.

4. The combination= in an iron bridge, ofthe truss-beams, with chairs formed ot' two counterparts provided with sockets or seats adapted to receive and support'the ends ot' said beams in abutting relation, a base-plate 16, a transverse abutment beam, bolts for-securing the chair, plate and Isaid bea'ms together, a clip for securing the chair, plate and abutment beam together, and a clip for securing the chord and truss-beams together, substantially as described. end of the bridge, than would be afforded by 5. The combination, in an iron bridge, ofthe truss-beams, with a binder chair support for their ends, an abutment formed of a beam bent-and lapped at its ends, and means for binding and Lsecuring the said several beams and chair parts together, substantially as described. v

6. The combination, with the truss-beams anda chair provided with seats or sockets adapted to receive and support the ends of said beams, of a base-plate for said chair, and

a transverse cap-beam bent and lapped at its ends, means for securing. said chair to said base-plate, and means for securing said chair, base-plate and lower beams to the lapping end of said cap-beam, substantially as described.

7. The combination, in an iron bridge,ot' the truss-beams, with a chair formed of two counterpartshaving sockets or seats adapted to receive and support the ends ot' said beams in abutting relation, the ball or head of the truss-beam and the wall ot thechair-socket having engaging upset parts, and means for binding the said Vbeams together and to the chair parts, substantially as described.

8. In an iron bridge, an abutment chair of two half parts, each part having a base side the tloor or girder-beams, and the truss-beams,

with the shoe or socketfblocks, the truss-rod, the base'pl'ates 24, and the clips 23 and 29, substantially as described.

11. The combination, in an iron bridge, ot' the mainand the arch truss-beams, and the iioor or girder-beams, with the clamps or binders 35, the base-plates 24, and the clipsp23 and 34, substantially as described. v

12. The combination, in an iron bridge, of the door or girder-beams, the truss-beams, and the baseplates 24, with the clamps or bind- IIC) ers 35,the clips 29 and 34, and the brace-rod 45, substantially as described.

13. The combination, in an iron bridge, of the trussbeams,and the iioor or girder-beams, with the base-plates 16 for said truss-beams, chairs or binders provided with sockets or seats adapted to receive and support the ends of the truss-beams, the brace rods 47 connecting thesaid base-plates and girder-beams, and means for binding and securing the said truss-beams, chairs and base-plates together, substantially as described.

14. In combination, in an iron bridge,'tl1e truss-beams, the socket chairs and the arch clamps or binders therefor, the floor or girderbeams, their truss rods and shoe or socketblocks, the clips and brace rods, and iron abutments having cap-beams bent and lapped at their ends and bound and secured to the said socket chairs, substantially as described.

15. The combination, in a bridge, of the truss-beams and the arch-beams, with clamps or binders having their clamping sides formed with grooves interlocking with the ianges of the truss-beam and the sides of the head of the arch-beam, and riveted to the Webs ot' both said beams, substantially as described.

16. The combination, in an iron bridge, of the truss-beams and the girder-beams, the rods 29 connecting the truss and girder-beams by the base plates 24E and by the angle plates 32 bolted to each side of the web ol said truss beam, substantially as described.

17. The combination, in an iron bridge, of the truss-beams and the base-plates 1G, with a sectional flanged chair 17 constructed to form the socket for the end ofthe truss-beam, a nutted clip 21 and the bolts 19, 2O and 202l for securing the parts together, substantially as described.

18. The combination, in an iron bridge, of the lower chord having the notched abutments 26 and c in its head, with a sectional chair-socket constructed to engage the beam abutment 26, the truss-beam engaging the beam abutment c and means for securing said parts together, substantially as described.

19. The combination, in an iron bridge, of the truss-beams, and the girder-beams, with sectional chair sockets constructed to engage said truss-beams, the base plates 16, means for securing the latter to the sectional chair, means for securing the latter to the trussbeams, and the brace rods 47 connecting the said base-plates and girder-beams, substantially as described.

20. As atie and support for the lower chordbeams ot an iron bridge, the horizontal capbeams oi' angle iron bent and lapped at each end, in combination, with the truss-beams, and suitable means for securing the ends of said beams to said cap-beams, substantially as described.

2l. The combination, in an iron bridgetruss, of a tie-beam and a brace-beam of railway T rail, with chairs formed of two parts with confronting faces, each face conforming in contour to the said beams and having a shoulder to receive the abutting end of the brace-beam and bolts for securing said parts of the chair to each other, and to the tie-beam, substantially as described.

In testimony whereof I have hereunto signed this specification in witnesses.

DANIEL F. LANE.

Witnesses:

A. E. H. JOHNSON, GUY II. JOHNSON.

the presence of 

